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3 years ago

3/4 - 5/6 I will give brainliest if your answer is correct

Mathematics

2 answers:

Arada [10]3 years ago

5 0

$\frac{3}{4} - \frac{5}{6} \\ \\ = > \frac{3 - 5}{36} \\ \\ = > \frac{ - 2}{36} = > \frac{ - 1}{12} answer$ αηѕωєя

Sergio039 [100]3 years ago

4 0

Answer:

1/12 I think this is it if not sorry

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3. A set of n = 18 pairs of scores (X and Y values) has SSX = 20, SSY = 80, and SP = 10. If the mean for the X values is MX = 8

Karo-lina-s [1.5K]

Answer:

a. Pearson Correlation

r= $\frac{1}{4}$ or 0,25

b. The regression equation is

$Y = 6+ 0,5 *X$

Step-by-step explanation:

a. Pearson Correlation

Using the equation for Pearson correlation:

$r = \frac{SP}{\sqrt{(SS_{x} * SS_{y})} }$

$r= \frac{10}{\sqrt{(20 * 80)} }$

$r=\frac{10}{\sqrt{1600} }$

$r=\frac{10}{40} =\frac{1}{4} = 0,25$

b. Regression

Using regression equation

1. $Y = a+ b *X$

2. $a= m_{y} - b* m_{x}$

3. $b= \frac{SP}{SS_{x} }$

So replacing first 'b' because is content in 'a' equation

$b= \frac{SP}{SS_{x} }$

$b= \frac{10}{20}$

$b= \frac{1}{2} = 0,5$

Knowing 'b' can know 'a' and complete the equation

$a= m_{y} - b* m_{x}$

$a= 10 - 0,5* 8$

$a= 6$

Replacing in the equation 1:

1. $Y = a+ b *X$

$Y = 6+ 0,5 *X$

3 0

3 years ago

Plz help I just need numbers

insens350 [35]

Answer:

(0, 0)

Vertex: (1, -5)

(2, 0)

3 0

3 years ago

(Trignometry, need help please.) A dog is tethered to a 14 foot leash. She travels around an arc of 49 feet. What is the radian

saul85 [17]

Element of Circle

the central angle (α) = (the length of the arc x 360°)/2πr (r = radius)

$\alpha =\dfrac{49\times 360^o}{2\pi\times 14}=200.64^o$

convert to rad:

$\tt 1^o=\dfrac{\pi}{180^o}rad\\\\200^o=\dfrac{200^o\pi}{180^0}rad=\boxed{\bold{3.48~rad}}$

6 0

2 years ago

Please help besties

My name is Ann [436]

Answer:

200.96

Step-by-step explanation:

64x3.14=200.96

8 0

3 years ago

Read 2 more answers

How do you solve 2m-10=44+8m

Damm [24]

Answer:

m = -9

Step-by-step explanation:

2m-10=44+8m

Subtract 2m from each side

2m-2m-10=44+8m-2m

-10 = 44+6m

Subtract 44 from each side

-10-44 = 44-44+6m

-54 = 6m

Divide by 6

-54/6 = 6m/6

-9 = m

6 0

3 years ago

Read 2 more answers